<!DOCTYPE html>
<html>
<head>
  <title>test</title>
<meta charset="utf-8">
<style type="text/css">
*{margin: 0;padding: 0}

</style>
<script type="text/javascript">
window.onload=function(){
	let now = new Date().getTime();
	console.log(now)
}
</script>
</head>
<body>
	
</body>
</html>